[Bug rtl-optimization/115495] [15 Regression] ICE in smallest_mode_for_size, at stor-layout.cc:356 during combine on RISC-V rv64gcv_zvl256b at -O3

[patrick at rivosinc dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115495

--- Comment #4 from Patrick O'Neill <patrick at rivosinc dot com> ---
This failure also appears when compiling glibc 2.39 with rv64gcv_zvl512b and
rv64gcv_zvl1024b.